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Quiz Bank Exp 4

Quiz Bank Exp 4 - c That are light< 500MW d That are...

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Quiz Bank for CHEM 6B Experiment 4 OH 1. BH 3 /THF 2. H 2 O 2 , NaOH 3. HCl, H 2 O + B(OH) 3 1. You analyzed your products on GC using a carbowax column. Which compound came off the column last? a. 1-octanol b. 2-octanol c. 3-octanol d. All of the above e. None of the above 2. What was the purpose of the attached drying tube in the Hydroboration-Oxidation lab? 3. Which IR signal would indicate unreacted starting material?
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4. In GC chromatography, the degree of separation depends upon: 5. Normal phase FLASH chromatography is mostly used to separate compounds: a. That have more than 5-polar groups b. That have less than 5-polar groups, but more than 1
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Unformatted text preview: c. That are light (< 500MW) d. That are heavy (> 500MW) e. Flash always works with all types of carbon containing compounds 6. R f is equal to: a. The distance traveled by the solvent divided by the distance traveled by the substance b. The distance traveled by the substance divided by the distance traveled by the solvent c. The distance traveled by the solvent multiplied by the distance traveled by the substance d. The distance traveled by the substance multiplied by the distance traveled by the solvent 7. Which of the following is a method used to visualize a compound in TLC? a. UV light b. silica gel c. an I 2 stain d. all of the above e. a and c 8. Which of the following carbons is responsible for the peak further downfield (biggest number) in the 13 C-NMR. a. b. c. d. e....
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